Possible platforms for the study of anomalous disclination states are SnTe and antiperovskite materials.
These materials classes have been put forward as candidates for second-order topological insulators protected by rotation symmetry [1]}, [2]}.
Our findings suggest that disclinations in these materials may bind helical modes.
Moreover, SnTe nanowires with a pentagonal crossection have been succesfully fabricated [3]}.
Their unusual shape hints at the presence of an isolated disclination at their core, rendering them a promising experimental platform for the study of anomalous disclination states.
